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DTSTART:20070311T020000
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DTSTAMP:20250305T081707
DTSTART;TZID=America/Detroit:20250313T143000
DTEND;TZID=America/Detroit:20250313T153000
SUMMARY:Workshop / Seminar:Special Interdisciplinary QC-CM Seminar | Quantum active solids: Photoinduced non-reciprocal magnetism
DESCRIPTION:Out of equilibrium\, the action-reaction symmetry of the interactions is often broken\, leading to the emergence of various collective phenomena with no equilibrium counterparts. Although ubiquitous in classical active systems\, implementing such non-reciprocal interactions in solid-state systems has remained challenging\, as the known quantum schemes require precise control over the system on a single-site level. Here\, we propose a novel dissipation-engineering protocol to induce non-reciprocal interactions in solid-state platforms with light\, which we expect to be achievable with state-of the-art experimental techniques. Focusing on magnetic metals for concreteness\, we show microscopically that a light injection that introduces the decay channel to a virtually excited state gives rise to non-reciprocal interactions between localized spins. One can even realize a situation where spin A tries to align with spin B but the B tries the opposite\, resulting in chase-and-runaway dynamics. Applying our scheme to layered ferromagnets\, we show that a non-reciprocal phase transition from a static to a many-body time-dependent chiral phase emerges. Our work paves the way to bring solid-state systems to the realm of non-reciprocal science\, providing yet another possibility to control quantum matter with light.
UID:133439-21873101@events.umich.edu
URL:https://events.umich.edu/event/133439
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Physics,Science
LOCATION:West Hall - 335
CONTACT:
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